Type-writing machine.



T. L. KNAPP.

TYPE WRITING MACHINE.

APPLICATION FILED JAN. 21, 1914.

1,11 5,685, lzatented NIN. 3, 1914.

Hlllhm u' f www THE NORRIS PETERS CO.. PHOTO-LITHU.. WASHINGFON. D. C4

` Henry and UNITED sTATEs PATENT cierren.-

THERON L. KNAPP, OF WOODSTOCIQILLINOIS, ASSIGNOR TO THE OLIVER TYPEWRITER COMPANY, OF CHICAGO, ILLINOIS, A

CORPORATION 0F ILLINOIS.

. y. TYPE-WRITING MACHTN'E.

Specification of Letters Patent.`

k'Patented Nov.3, 19134;.,y l

Application filed January 21, 1914. g Serial Nm 813,363,`

To all t0/wm it may concern: 5

{Be it known that, I, THERON L; KNAPP,

'a citizen of the United States, and a resident of "Woodstoclnin thecounty of Mc- State of Illinois, have invented certain new and useful"Improvements y'in Type-Writing Machines; and I do hereby declare that the following is a full, clear, and exact description thereof, reference' being had to `the `accompanying drawings, andto the letters of reference marked thereon, which form a part of this specification.

Vrl`his invention relates to means for effecting the release of the paper 'carriage from the letter-spacing mechanism in typewrit-ing machines ofthat class having letter-spacing mechanism which includes rack-teeth on t-he carriage frame, and an escape-wheel shaft,

provided with a gear-pinion engaging the said rack teeth, and in which the gear-pinion is movable with the end ofthe escapewheel shaft on which it is mounted, toward and away from the rack-teeth on the carriage to elfect the engagement of lthe carriage with, and its disengagement from, the

vletter-spacing devices.`

rlhe invention relates more particularly to means for mounting the escape-wheel shaft in a manner permitting swinging or oscillating movement thereof, to means for limiting the extent of moveinentof'theI gearpinion toward and from the carriage rackteeth, and to certain details of construction in the machine, associated with the features referred to. v l Y The invention is herein shownA as applied to a typewriting machine of the kind known as ,the` Oliver machine, but-the features constituting the invention may beapplied to machines of other kinds.` K.

The invention consists in the matters hereinafter set forth and pointed out; in the appended claims. Y y v In the accompanying. drawings illustrating my invention: Figure 1 is a view in side elevation, with parts in. vertical section, of-

- the portion of the'typewriting machine to which the invention relates; Fi: 2'is` af plan view of the same,`w`ith parts 1n horizontal section, taken on line2-2of Fig. 1 `FignS is 'a view 1n front elevation of the parts 'shown 4in Figs. l and 2; F ig'. t is a crosssection ofthe bracket' 'on the shift-frame,

, taken on line 4-4 ofFig. 2;4 Fig. 5 is a vertical, longitudinal, detail sectional view,

. stop-'plate on4 the the lShaa-frame, by

:sions 'fromv twoor more escape-wheel shaft, taken' on line 6&6 of

Fig. 2; Fig; Z is a plan view ofthe bracket on the shift-frame, with other partsremoved; Fig. 8 is a detail said bracket.` Said drawings 4show the main part l of` y, l y K which the Vpaper-,carriage is immediately supported and which has shifting movement backwardly and forwardly on the machine frame,k The'vpapercarriage has` endwise or letter-space movement on said shift-frame, and said shift? frame has backward and forward movement on the machine' frame .to provide for shifting ,the'platen in suchmanner` as tobring theL paper in position for receiving impresy p p types `upon each type-bar of themachine. Said shift-framev 1s provided with a depending part or, arm 2, and with a forwardly 3; The drawings also `illustrate the longitudinal front frame-member 4 of the papercarriage, which constitutes the rack-bar of the carriage and is prov'ided'on its front edge, with a series of rack-teeth 5, which are engagedlby a gear-pinion attached to the upper end offan upright escape-wheel shaft 7 located forward ofthe shift-frame. Said shaft 7 has, yat'iits lower end, yan escapewheel S which yconstitutes a part of the escape mechanism ,which yis operated by the universal barof the machine and by which' is controlled the endwise or letter-space movement of the carriage under the action t of its actuating spring.' The vescape-wheel shaftis supported, at its'v lower end, by a bracket member 9, which is attached to, and extendsforward from, the depending arm 2 of ytheshift-frame. Said shaft, at its upper end, engagesy a bearingl block 1l, which is adapted to slide horizontally in a guide slot formed in the upper end of .the bracket y y. 1'00,

3( The slidingy movement of the bearing n plan view of the projecting bracket i block 11i-in the vsaid bracket 3 permitsthey gear-pinion 6 tobe moved "or shifted lforwardly and backwardly into and out of engagement with the rack-teeth l5, `and said blocky is held'no-rmally at the rearward limit of.` its movement by an eXpansively acting coiled spring 18 (Figs. k2 and 5) `applied between theouter face of said block and .the y outer'end kof the slot in the bracket 3. The

release lbar 14 'of the carriageis arranged `of the escape-wheel shaft to throw the same outwardly or forwardly and thereby release the carriage from the letter-spacing mechanism.

The drawings illustrate certain parts or j features forming `part of a column-stop or tabulating mechanism, as follows: The front frame 'member or rack-bar 4 of the paper- 'carriage is provided with a depending, longitudinal flange 16, provided at itslower edge with a plurality of notches. vMounted on said flange 16 are stop-members 17, one of which is shown in Fig. 1, which are adjustable on said fiange cndwise of thecarriage.` n I f\ keV-actuated stop 20 is mounted on the A shift-frame and is movable vertically thereonto bring it into and out of the path of the stop-member 17- on the carriage.` Said stop 20 is attached to the rear or. inner end of a lever 21, arranged to extend from front to rear ofthe machine andL pivoted Von the bracket 3 of the shift-frame. Avvertically arranged vplate 22 is attached to the forward end of the bracket 3st as to close the forward end of the slot therein. Said plate extends below the said bracket and affords lsupport for a horizontally arranged pivotrod 23, constituting a ournal yor bearing for said lever .21. The lever 21 is provided with two rigid arms 24 and 25; the arm 24 constituting a forward extension rof said lever and the arm 25 projecting upwardly from `the pivotal axis thereof.

A key-lever26 for operating the columnstop devices, lis mounted on the pivot-rod 23 projects forward from the bracket 3. Said key-lever is provided atits outer end with a key 27 by which it-maybe operated. Said key-lever is providedwith a stud 2S which projects from the right-hand face thereof in position to engage the under side of the arm 24 on the lever 26. Said ykeylever 26 is connected with the upwardly eX- tending arm 25 of the lever 21 by means of a contractile, coiled spring 30 connected at one end with said arm 25 and at its opposite end with a stud 31 afiiXed to and projecting from the right-hand side of said'key lever. Said key-lever 26 is provided .with a coiled lifting spring 32, by which its front end is held normally elevated; said lifting spring being connected at its lower `end with the stud 31 and atl its upper end with vthe bracket 3.

The key-lever 26 is provided at its rear or pivoted end with an upwardly extending rigid arm 36, the upper end of which is adapted to engage a horizontally arranged connecting bar 37, through the medium of which action is transmitted from the keylever to the upper end of the yescape-wheel shaft 7. Said bar 37 is provided at its forward end withv a longitudinal slot through which the upper end of the arm 36 of the key-lever upwardly projects; the front and rear edges of the arm being adapted for contact withthe opposite ends of the said slot, which is made long enough to afford a desired extent of lost motion between the key-lever and the said bar. In the normal orelevated position of said key-lever 26, the

upper end of its arm 36 stands in a position intermediate betweenthe ends -of the slot in the connecting bar 37, so vas to leave said bar 37 free to 'be moved forwardlywith the upper end of the escape-wheel shaft 7 when the latter is swung forwardly to 'disengage `the pinion from' the carriage rack-bar 3, as

occurs in the operation of the release device on the paper-carriage.

So farjas described. the parts illustra-ted are constructed and operate in the same manner as in the. Oliver typewriting machines as heretoforeconstructed.

In order to provide for the forward `and backward swinging movement of the upper end 0f the escape-wheel shaft, anovel construction is provided in the bearing for the lower end of said shaft, as follows: A bearing member 10 is supported on the forward end of the bracket arm 9 on the shaft-frame. The forward end of said bracket arm is bent downwardly to form a vertical depending arm 41. Attached to the `front face of said ar1n-is"a,supporting member, having the form of ablock 42, o-n which the bearingmember 10 is pivotally supported in such man/ner as to turn or rotate on a horizontal, transverse aXis. As shown, the block 42..is provided with an integral, depending arm 43, arranged parallel withand in contact with thev arm 41,- and secured thereto by screws. The pivotal connection between the bearing member 10 and the block 42 is formed by an integral cylindric Stud or journal 45 (Fig. 6), which extends laterally from saidbearing member 10 and is adapted to turn in a horizontal, cylindric bore or bearing aperture formed in the block 42. The bearing'member y10 is held in engagement with the block 42 by means of a screw 46 inserted in the end of the bearing stud 45, and provided with a head which overlaps and bears against the outer face of said block 42. The Alower end of the escapewheel shaft extends through and turns in a cylindric bearing aperture formedy in the bearing member 10. A screw 48 is inserted vertically into the lower end of the shaft,

and is provided with a head which overlaps Y and the frictional resistance to the turning of the shaft in the bearing member will be the same in all positions of the shaft. y

The bracket 3 is provided with a stopplate forming stops adapted to act on the bearing block ll for limiting the movement of the upper end of the escape-wheel shaft and the gear-pinion toward and from the rack-bar. Said stop-plate is provided with a forward, transverse arm 51 acting as a c front-stop,l and with a rear transverse arm 52 acting as a rear stop, for the bearing block ll. As shown, said stop-plate 1s arranged horizontally on the top face of thel bracket l2, and is secured theretoby two screws 53, inserted vertically through" the main part of the plate, which extends `from front to rear of thel bracket at one side of the escape-wheel shaft. The forward stop-arm 5l of said stop-plate acts as a stop to arrest the movement of the escape-wheel sha-ft when drawn forwardly in the operation of the key-lever 26. Said arm 5l is shown as provided with two rearwardly extending lugs 55a, 55a for contact with the front faceof the bearingblock 11. The rear arm 52 of said plate acts as a stop to arrest the rearward movement of the said shaft under the action of the spring 13. Said rear arm is made narrow from front to rear and is bendable in. a horizontal plane, or adapted` to be bent at-its free or right-hand end,

backwardly orforwardly. in order to provide accurate adjustment thereof with respect to the bracket. The stop-plate 50 is secured to the bracket in such position that its forward stop arm-5l will properly limit the forward movement of the gear-pinion when the key-lever 26 is depressed. By bending the rear arm lforwardly or backwardly, the rearward position of ther-gearpiiiion may be accurately determined, at the time its teeth. are in engagement with those of the carriage rack-bar:y The rear arm 52 is so adjusted as to prevent the said rack-bar and the carriage being subject to thek rearward pressure of the pinion, due to thek action of the spring 13which throws the bearing block ll rearwardly; it being found that the pinion engages and acts on the carriage rack-bar more smoothly, uniformly, and with less friction and wear, when held from backward pressure against thefracky teeth and in'proper operative position relatively to the said teeth, by the rear stop arm. f

. As hereinbefore stated, the lifting spring 32, for the key-lever 26, is connected at one end with the bracket 3. As a further improvement, an arm or standard 33, rising from the bracket 3, is provided for supporting the upperv end of said spring 32; Said arm 33L ris made in one piece, or integral y with the'stop-plate; saidV arm forming an extension of, and being bent upwardly from, the right-hand end of the forward stop-arm 5l` of said stop-plate. f f

In the bracket 3, at the left-hand sideof the slot therein, is `inserted a. screw-plug f 55, the inner. end of which formsk a bearing surface to take they lateral pressure. off the bearing block, which is pressed toward the `left by the tension of the kcarriage-actuating spring, exerted ythrough the carriage `and rack-bar, on the gearpinion.The said screw-.plug is pro-vided with a head, which bears against the outer face of the bracket,

'and accurately determines the' position of the inner or bearing end of the plug. The front plate 22 of the bracket 3 is provided with a rearwardly extending, integral arm 56 Fig. 7), arranged at the left sidev of and at a short distance from the saidbracket, y

and the screws 53,` 53, which secure the stopplate'50 to the bracket, are inserted through ,holes in said stop-plate and into the upper edge of said arm 56. By reason of this feature of construction, itis possible to locate the said screws at the left of the escape'- are readily accessible for the 'removal and replacement of the stop-plate. This constructionalso lprovides for the attachment .of the top-plate tothe left-*hand side of the bracket, without interference with the screwplug `'Ihe features of construction illustrated may be variously modified without departure from the spirit of my invention, and I do not, therefore, desire to be limited to the exact details shown in the drawings and f hereinbefore described, except so far as lpointed out in the appended claims.

I claimy as my invention: l. In a typewriting machine,-the combination with a carriage rack-bar, and an escapemovement of the bearing-member on an axis for engagement with said wheel shaft, and in position in which they iio y iso transverse to the axis of rotation of the shaft,inthe movement of the pinion toward and from the rack-bar.

2. In a typewriting machine, the combination with a carriage rack-bar, and an escapewheel shaft provided at one` end with a. gearpinion adapted for engagement with said rack-bar, said pinion being movable with the end of said shaft toward and from the rack-bar, of a bearing-member for the opposite end of said shaft provided with a bearing aperture for the said shaft,` and with a laterally extending, cylindric stud, and a support for said bearing-member, consisting` of a block having a bearing aperture for said stud.

lnk av typewriting machine, the combination with a carriage rack-bar, of an escapewlieel shaft provided at one end with a gearpinion adapted forv engagement with said rack-bar, said pinion being movable 4with the end of said shaft toward and from said rack-bar`r a bearing for the opposite end of said shaft. 'provided with a laterally extendlng bearing-stud` a support for said bearing-stud, comprising a bearing block provided with a bearing aperture for said stud, and a screw inserted intothe end of said bearing stud, with its head in contact with the outer face of said block.

fi. ln a typewriting machine, the combination with a carriage rack-bar, and an upright escapo-wheel shaft provided with a gear-pinion adapted for engagement with said rack-bar, said shaft being movable at'its upper end toward and vfrom said rack-ban of a bearing member provided with a. cylindric bearing-recess adapted to receive the lower end of said shaft, and a support for said bearing member, said bearingmember having pivotal connection with said support,

affording rotative movcmentof the bearing member on a horizontal axis, and the shaft having a downwardly facing, annular shoulder in contact with the top of the bearing member. and a headed screw inserted into the lower end of said shaft with its head engaging the bottom of the bearing-surface.

. 5. In a typewriting machine, the combina.- ticn with a bracket provided with a. guide slot` of an escape-wheel Yshaft provided with a gear-pinion, a bearing block for said shaft having sliding movement in said guide-slot, a spring applied to press the pinion and the upper end of the shaft toward the rack-bar, and a stop-plate secured to the said bracket at one side of the saidshaft, said stop-plate having a laterally extending arm forming` a back-stop for said bearing block`r said arm being bendablc in the plane of the stop-plate to afford adjustment of the position of the back-stop.

6. In a typewriting machine, the combination with a carriage rack-bar,v and an escapewheel shaft provided with a gear-pinion adapted for engagement with said 'rack-bar, ofa bracket provided with ai guide slot, a spring acting on said shafty to press the pinion toward the rack-bar, a bearing block for said shaft having sliding movement in said guide-slot, a key-lever acting onY the escapewheel shaft to draw the pinion away from the rack-bar, and a stop-plate secured to the said bracket, said plate having a laterally7 extending arm forming a front-stop for the said bearing block and a second laterally extending arm forming a back-stop for said nearing block, said second arm being bendable in the plane of the stop-plate to afford adjustment of the position of the back-stop.

T. In a typewriting machine, the combination with a bracket provided with a guidoslot, of an escape-wheel shaft7 a gear-pinion o-n said shaft,r a bearing block for said shaft having sliding movement in said guide-slot, a lm v-lever` acting on said shaft togive forward movement to the same, a stop-plate attached to the said bracket and providedwith an arm forming a front-stop for the said bearing block7 a standard integral with said arm and extending upwardly therefrom, and a lifting spring for the said key-lever, attached at one end to said key-lever and at vits'other end to said standard.

S. In a typewriting machine, the combination with a bracket provided with a guideslot, of an escape-wheel shaft. a bearing block for said shaft, having sliding movement in said slot, a spring located between thesaid bearing-,block and thev forward end of said slot, a plate attached to the forward face of the bracket for closing the outer end of said slot, said plate being provided with anintegral arm extending rearwardly therefrom at one side of the bracket, a key-lever acting on the escape-wheel shaft to draw the same forwardly, and a stop-plate secured to the upper face of said arm, and forming a stop to limit the forward movement of said block and shaft under the action of said keylever.

9. In a typeivriting machine` the combination with a carriage rack-bar, and an escapewheel shaft provided with a ,orar-pinion.` of a bracket provided with a slot. a bearingblock for the shaft having sliding movement in said slot, and a screw-plug inserted through the bracket at one. side of said slot, the inner endof said screw-plug forming a bearing surface for one. of the lateralpfaces o-f said block.

l0. ln a typevvriting machine, the combination with a bracket rovided with a Guideslot. of an escape-wheel shaft. a bearingblcck for said shaft, having sliding movement in said slot, a screwplug inserted laterally through the bracket at one side of said slot.` the inner end of said screw-plug forming a bearing surface for one of the lateral faces of said block, a plate attached to the 1,115,385 r i Y y .Y

forward face of the bracket for closing the 'outer end of the slot therein, said plate being 11. In a typewriting machine, theeombi-r.

nation of a rack-bar, l,andan escape-wheel `shaft provided with a gear-pinion adapted for engagement `with said rack-bar, said pinion being movable with said sha-ft toward and from said rack-bar, a bearing-member -15 for said shaft, and a'sup'port forsaid bearing swinging movement jof,theloeari11g-mem` y ber on an axis transverse tothe axis of rota- V `20 tion of said shaft, inthe movement ofthe pinion toward and from the rack-bar.

In testimony, that I, claim the'oregoingyy as my invention I aiiixmy signature in the presence of two witnesses,` this 179th day of` Jannaryy A. D.rl9l1l. y

i THERON' L. KNAPP.

Witnesses: p f i `EUGENE C. WANN,

. f yMii-'Union D; HERMAN.`

` Copies of this patent may brerobtaineid for veeents eaeh, v'by ac'lil'essingitlie Comniis'Svione-rof Patente,

` f Washington, 1)./ (1.7v f

ing-member, Said bearing-memberphaving 'pivotal eonnectlon with vsaid support, i afi'ord-l v 

